720701517 has 16 divisors (see below), whose sum is σ = 972554240. Its totient is φ = 474692400.

The previous prime is 720701497. The next prime is 720701537. The reversal of 720701517 is 715107027.

It is an interprime number because it is at equal distance from previous prime (720701497) and next prime (720701537).

It is not a de Polignac number, because 720701517 - 2⁶ = 720701453 is a prime.

It is a super-2 number, since 2×720701517² = 1038821353212202578, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720701537) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83892 + ... + 92082.

It is an arithmetic number, because the mean of its divisors is an integer number (60784640).

Almost surely, 2^720701517 is an apocalyptic number.

It is an amenable number.

720701517 is a deficient number, since it is larger than the sum of its proper divisors (251852723).

720701517 is a wasteful number, since it uses less digits than its factorization.

720701517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8544.

The product of its (nonzero) digits is 3430, while the sum is 30.

The square root of 720701517 is about 26845.8845449354. The cubic root of 720701517 is about 896.5719457133.

The spelling of 720701517 in words is "seven hundred twenty million, seven hundred one thousand, five hundred seventeen".